The Best King Mattress - 2021
We looked at the top 8 King Mattresses and dug through the reviews from 38 of the most popular review sites including and more. The result is a ranking of the best King Mattresses.
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Our Picks For The Top King Mattresses
- The Best King Mattress
- 1. TUFT & NEEDLE Original Adaptive Foam King Mattress
- 2. Zinus Green Tea Memory Foam King Mattress
- 3. Classic Brands Ultimate Gel Memory Foam King Mattress
- 4. Casper Sleep Element King Mattress
- 5. Ashley Chime Medium Firm Memory Foam King Mattress
- 6. Linenspa Memory Foam & Innerspring Hybrid King Mattress
- 7. Vibe Gel King Memory Foam Mattress
- 8. Sleep Innovations Shiloh Memory Foam King Mattress
Pressure ReliefThis king mattress is designed with a support layer that lasts through the night, not just for the first few hours.
Durable and SturdyInstalling this king mattress is a breeze, as you simply need to open the packaging and watch the bed unravel and inflate.
Stretch Knit Fabric Cover IncludedInside this king mattress is a cooling gel that whisks away body heat for a comfortable night's sleep.
Easy InstallationThis king mattress features a durable base that not only prevents sagging, but also provides support for the entire body.
Why we recommend these king mattresses?
Products Considered
Products Analyzed
Expert Reviews Included
User Opinions Analyzed
Our experts reviewed the top 8 King Mattresses and also dug through the reviews from 38 of the most popular review sites including and more. The result is a ranking of the best of the best King Mattresses.
DWYM is your trusted roduct review source. Our team reviews thousands of product reviews from the trusted top experts and combines them into one easy-to-understand score. Learn more.
The Best Overall
TUFT & NEEDLE Original Adaptive Foam King Mattress
Our Take
You won't have to worry about feeling overheated when you go with this king mattress, as it contains a cooling gel to keep you comfortable. The mattress is constructed without any harmful chemicals and even has a CertiPUR-US certification. Sleepers will also appreciate the open-cell structure, as this creates a flexible sleep surface.
What other experts liked
What other experts didn't like
The Best Bang For Your Buck
Zinus Green Tea Memory Foam King Mattress
Our Take
Aches and pains are a thing of the past when you opt for this king mattress. It's infused with green tea and activated charcoal, which not only absorb moisture, but also relieve tension. The three layers of foam are also designed to provide you with both comfort and support.
What other experts liked
What other experts didn't like
Our King Mattress Findings
TUFT & NEEDLE Original Adaptive Foam King Mattress
What We Liked: You won’t have to worry about feeling overheated when you go with this king mattress, as it contains a cooling gel to keep you comfortable. The mattress is constructed without any harmful chemicals and even has a CertiPUR-US certification. Sleepers will also appreciate the open-cell structure, as this creates a flexible sleep surface.
Zinus Green Tea Memory Foam King Mattress
What We Liked: Aches and pains are a thing of the past when you opt for this king mattress. It’s infused with green tea and activated charcoal, which not only absorb moisture, but also relieve tension. The three layers of foam are also designed to provide you with both comfort and support.
Classic Brands Ultimate Gel Memory Foam King Mattress
What We Liked: Constructed using a ventilated memory foam, this king mattress is soft and breathable. It includes a high-density base foam that works to provide relief to your pressure points, which is welcome after a long hard day at work. The foam is also naturally hypoallergenic and resistant to mold and bacteria.
Casper Sleep Element King Mattress
What We Liked: You won’t have any trouble keeping this king mattress clean. It comes with an upholstery-grade zip off cover that can be tossed right inside the washing machine. The mattress itself also wows with its two layers of breathable foam, which allow for proper airflow to keep you nice and cool.
Linenspa Memory Foam & Innerspring Hybrid King Mattress
What We Liked: The bottom of this king mattress is made using steel coils that are able to properly distribute your weight. In the center, you’ll find a thick memory foam layer for softness. The top cushion is used to add comfort and support, so you feel good when you wake up in the morning.
Our King Mattress Buying Guide
If you have an old mattress or find yourself waking up each morning with aches and pains all over, it’s time to get a new one. Your mattress should align with the kind of sleeper you are and help you get a restful night’s sleep. It should also be roomy enough for you and your partner, your spouse or even your four-legged friends, which is why king mattresses can be so nice. When you wake up in the morning, the last thing you should feel is pain.
There are a number of different types of mattresses available on the market, each with its own set of benefits. Opt for one that matches your sleep needs. Memory foam is a common option for many people because of the comfort it offers. This kind of mattress typically has several different kinds of polyfoam. The mattress conforms to your spine while you sleep to help relieve pressure on your back. It also isolates motion, so it’s a good option if your partner moves around a lot in bed.
An innerspring mattress includes layers of foam with coils in between. There are different types of coils that can be used in these mattresses, such as pocket coils, wire coils and offset coils. However, the mattress can be noisy as a result of the coils, which may run against each other when you move. These mattresses are widely available and come in different price ranges. Plus, they are a good option for people who sleep warm, as they are breathable and feel cool.
A hybrid mattress includes both memory foam and coils. These mattresses conform to your body but also have good bounce thanks to the coils. They isolate motion better than an innerspring mattress, though they can still be noisy. They are typically more costly than a memory foam or innerspring mattress. Latex mattresses are similar to memory foam ones, but they sleep cooler and are ideal for those who get very warm at night.
DWYM Fun Fact
If you’re investing in a new king mattress, it’s important to take proper care of it to extend its life. Use a king-sized waterproof mattress protector to safeguard against any spills or leaks. They also keep off sweat, dust and allergens off your mattress, and they are easy to wash. Be sure to wash your bed linens every one to two weeks. This helps to reduce the possibility of bacteria building up on your mattress. Rotate your king mattress 180 degrees a few times a year. This way, you can wear your mattress down evenly on both sides.
The King Mattress Tips and Advice
- When you’re on the hunt for a better night’s sleep, make sure your new king mattress helps solve the problems you’re experiencing. For example, if you find you keep waking up because your partner tosses and turns a lot, then you need a mattress that isolates motion. Memory foam is a good option for this. If you find you don’t like the feeling of sinking into your mattress, then go with an innerspring one.
- It’s also important to consider what kind of sleeper you are, as some king mattresses are better for specific types of sleepers. If you primarily sleep on your stomach or your back, then a mattress with firm support is your best choice. It will keep your spine aligned without putting too much pressure on your back, which will ensure you don’t wake up sore. If you sleep on your side, then a softer mattress is a good option. It offers comfort and relieves pressure off of your hips and shoulders. Some people are combination sleepers, sleeping in different positions throughout the night. In most cases, either a mattress with firm or soft support will work for you.
- For many shoppers, temperature regulation is a major factor. If you sleep hot or cool, you’ll want to get a king mattress that helps you stay at just the right temperature during the night. Your temperature sometimes depends on whether you sleep deeply. Often, light sleepers sleep cool while heavy sleepers are hot. Softer mattresses don’t allow for as much airflow because you sink into them while you sleep. Firm mattresses are a good option if you are a hot sleeper. A hybrid or innerspring mattress is a good choice in this case.
About The Author
Anam Ahmed is a copywriter and essayist based in Toronto. She has been writing on technology, travel, parenting, and business for over 10 years, and works with a number of high-profile organizations. She values finding the best products to make people's lives easier. Anam earned an M.A. from the University of Toronto and a B.A.H. from Queen's University. Learn more at www.anamahmed.ca.